Telephone set



Sept. 28, 1943. a. BlNl EK E l AL.

TELEPHONE SET Filed July 28, 1938 v ZSheet s-Sheet l S Y R O m N MK R. EEG m mWL A BmW W o OW EE H B Sept. 28, 1943. e. BINIEK ETAL 8 TELEPHONE SET I Filed July 2a, 1938 2 Sheets-"Sheet 2 [WENT 0R8 BY INRICH LANGNER V ATTORNEY I Patented Sept. 28, 1943 UNITED ,Georg Biniek,Berlin-Siemensstadt, and'Heinrich Langner, .Berlin-Steglitz. Germany; vested in the Alien Property Custodian Applicatiomluly- 28, 1938', SerialNo. 221 .702

A ln Germany August 9., 1937,

9'Claims. ((31.194-16) Table telephone coinsets designed to collect a previously deposited coin after a completedconversation and to return the coin after an uncompleted connection are known; The coin normally is held in an intermediate position until the end of the conversation. On thehanging up of the receiver on its hook a-locking-magnet is energized which locks the path of the coin to the refund receptacle until the coin collecting magnet has been energized, and the coin deflected to the cash box. If there was no conversation; then the locking magnet is deenergized after --a short while and thus gives the coin free access to the return receptacle. This device, suffices for a fixed position of a coin collecting mechanism for telephone coinapparatus, which is firmly attached to its supporting base and cannot be moved; If a movable apparatus is concerned, however, which only stands loosely on a table, thencare must be taken that the coin inserted in the coin collecting device cannot be used for several conversations by shaking or inverting the apparatus. The device according to the invention shows a way according to which the previously indicated possibility of fraud is prevented.

According to the invention the coinmoves partly by pressure from the hand andpartly by its weight to an intermediate position in which it rests on an oblique'edge. of arotatablemember influenced by the. coincollecting magnet, where it is prevented from rollingawayduring the conversation by a lever. armoperated from the receiver hookswitch.

The drawings represent an, embodiment of the coin collectingdevice for a movable telephone coin set according to. the invention.

Fig. 1 is a plan view of the coin collecting-device with the magnets removed and with partof the lever assembly cut away for thesake of clarity.

Fig. 2 is a sectional view taken along the line 2--2 of Fig. 1.

Fig. 3 is a sectionaLview taken along th-e-line 33 of Fig. 1. V

Fig. 4 is a sectional view taken along; the line 4-4 of Fig.1.

Fig. is a top view ofthe magnets andlever assembly.

Within the casingof the table telephone. set and-fixed rigidly tothe; base (not shown) is a support I; which carries-a coin collecting mag; net=K and a locking--magnet Sp- Attached to this support is a station'ary back plate Hhaving a. largeflap 2 0 bent forward and-'-downward; as shown .in Figs, 1 and: :4 to form-acoin :channel 21. At the top of theback plate are apair of IugsIB- b'ent forwardat right anglesto the-plate and a further lug 3|, bent backwards at right angles to the plate. A tongue lfi' extend's upward from the bottom of the back plate 'and'in front thereof.

Mounted'on the back plate for rotation about pivot 28 isa-horizontal lever 28. Counterclock wise rotation of this lever (see-Fig. l) is-lim ited by lug 3| on the stationary back plate. Nearthe free end of the lever is suspended a latching member 21,- extending downwardly through an open ing- 45. in the back. plate. The purpose 'ofthis latching member willbe explained presently.

A pair of upwardly bent lugs-2 and 3 on the back plate carry an axle 4; Rotatably mounted on this axle is a coin chute comprising an essentially fiatmember Bhaving lugs at its lower end to receive the axle and'ca'rrying at its upper end a second member 5', the two members being parallel and spacedapart slightly from one another to form a coin receiving pocket l9; A- helical spring 'l'normally holds the coin chute in a vertical position, as shown, wherein the coin pocket is directly underneath the coin entrance slot 12 provided in the casing l3 of the telephone set; Afiixed to the coin chute is an oblique member 9 so positioned as to be engaged by the rounded plunger. l0 when button 8 is depressed." This causesthe coin chute to be rotated about the axle 4 against the tension of spring 1 so that it assumes an inclined position such as the one shown dotted inFig. 3. When the button is released it is'restored to normal by spring ll, whereupon the spring I returns the coin chute to its vertical position.

In the-fiat member-,6 forming one side of'th'e coin chute are provided two openings l1 and I8 one above the other. Through the top one of these openings extend the lugs l5 formed on the stationary back plate M," which lugs serve as the floor of the coin pocket'when the chute isin its normal position. Through the bottom opening I 8 extends the upwardly bent end of tongue 16.

When inits normal positionthe fiatmemberB of the coin chute is aligned with the flap .20 so that With the back plate l4 it forms an extension of the coin channel 2|. Directly underneath this channel is an inclined runway 23. The latter is part of member 22 having lugs by which it is mounted for rotation about the axle 4. Normal2 1y a: helical spring 26 holds the ,member 22 ina vertical position as shown; if it is displacedfa small'distance from normal againstthe tension of thespring; hcwever,-- the tongue 25* which" is described presently, this lug is adapted to be engaged by a coin in such a way as to raise the lever 28 and latching member 21, thereby to release tongue 25 and permit spring 26 to restore the runway to normal.

Fixed to the casing is an axle 34 on which are mounted three independently rotatable levers, each normally being held by a spring in the position shown. The first of these levers, 36, is loosely coupled with the armature 38 of collecting magnet K so that upon energization of the magnet, projection 39 on the lower end of the lever pushes the tongue 25 into the dotted position, shown in Fig. 2, thereby to displace the inclined runway as described above. The second lever, 31, is loosely coupled with the armature 4| of locking magnet Sp and has at its lower end a projection 40 which, upon energization of the magnet, is thrust across the opening of the coin channel 2| to prevent a coin from leaving the channel and passing into the refund receptacle which is intended to be positioned at the foot of the runway. The third lever has an arm 33 the end of which is adapted to be engaged by the switch hook (not shown) in any suitable manner; at its lower end this lever has a projection 35 which, when the hand set is removed from the switch hook, is thrust through an opening provided in the flap 2!! to block the coin channel 2| and prevent movement of a coin down the inclined runway.

The method of Working of the coin collecting device is somewhat as follows: i

For carrying outa conversation connection a coin must be inserted in the coin pocket 19 where it stands on the lugs l5 and supported by the members 5 and B. So long as the coin remains in this position it may be removed, of course, by merely inverting the table telephone set to cause it to fall out of slot l2 under the influence of gravity. Having placed a coin in the coin pocket, the knob 8 then is depressed momentarily, whereupon the rounded plunger l0 slides over the oblique member 9 of the coin chute and turns it into the position indicated. in Fig. 3 by dotted lines. After the coin chute has been pushed back a certain distance the coin carried thereby slips from the lugs 15 of the stationary back plate 14 and falls on the horizontal portion of tongue l8 arranged underneath. The spring 1 now presses the coin chute back into the initial position. During the return of the chute to normal the upper edge of the coin engages the edge 32 of lug 30 on the lever 28 and'at the same time is lifted slightly as it passes over the upwardly bent tip of tongue 16. This raises the lever 28 enough to cause the middle contact spring 42 controlled by the lever 28 to come into contact with the upper spring 43 of the set of con.- tacts 43-44. Shortly both points have been passed and the coin sinks onto the runway 23. The lever 28 following it removes the connection between the contact springs 42, 43and the middle spring 42 now remains in suspension between the contact springs 43, 44, therefore, without touching a spring. Both springs are metalically connected with one another and the middle spring stands in connection with the impulse contact of the dial (not shown) so that the selected impulses can only be sent to the desired subscribers set when the contact spring 42 is not connected with either of the springs 43, 44. The coin must therefore first take up the previously described intermediate position, before the selection can be begun. In the intermediate position the coin is so positioned relative to the stationary back plate M, the runway 23, the lug 30 in addition to the edge 32 and the projection 35;that itcan only be freed from this position at the end of the conversation as a result of the measures carried out by the depressing of the switchhook. A shaking of the apparatus or turn ing upside down thereof cannot free the coin from the. position mentioned. Further, should the subscriber again depress the button 8 and thereby tilt the coin chute into its inclined position, the coin nevertheless will be maintained erect on the runway bythe upwardly bent end of tongue l8 and the downwardly bent portion 32 of the lug 30. When a, conversation is ended, the collecting of the inserted coin follows after the close of the conversation by the hanging up of the receiver on the cradle. On the depressing of the cradle switch the lever 33, in view of its spring control, draws theprojection 35 out of the channel 20, whereby the coin can roll down the inclined runway 23. At the same moment the locking magnet is energized, however, over the exchange loop and projection 40, controlled by it at the lever 31, is thrust across the exit of the coin channel to prevent the coin from passing therefrom into the refund receptacle. After a short delay the coin collecting magnet K energizes. By the attraction of its armature the lever 36 is freed and by, means of its projection 39 pushes the member 22 clockwise in Fig. 3. As a result the coin falls into the cash box. The runway remains in the rotated position due to tongue 25 being caught behind the latching member 21 on the lever 28. It is freed again from this position by the next coin collecting operation when the lever 28 is lifted by the coin encountering the cam edge 32. If the telephone coin set is inverted during the operation of the coin collecting magnet, in order to prevent the sliding of the coin into the refund receptacle, the arm 24 is arranged on the member 22, and blocks the exit to the refund receptacle by means of its'rotation. Since, as has already been stated, the member 22 is held locked in its rotated position by means of the latching member 21, the coin held back would fall in the collecting receptacle upon the replacing of the telephone coin set.

What is claimed is:

1. A coin collecting device for a movable table telephone set, comprising a coin chute through which coins are adapted to move under the infiuence of gravity, a coin slot for introducing coins into said chute, means for temporarily holding a coin in one position in said chute against the force of gravity when deposited in theslot, said coin, when in said position, being removable from said chute via said slot by inverting said table telephone set, means releasing the coin to allow it to move to another position in the chute, an electrical contact member operated by the coin in moving from said first position to said other position, means for holding the coin against among-s times thereby "to permit the coin to 'move down the runway, and means for at times displacing the: runway from beneath the coin, thereby-to cause said coin to 'move in-a direction different than that in which it would'move if it were permitted to go down'said runway.

2. A movable coin collecting device, comprising '15 a coinjchut'e through which coins are adapted to move under theinfiuence of gravity, a coin slot for introducing coins into said chute, means for temporarily holding a coin .in one position in said chute against the force of gravity'when deposited in the slot, said coin, when in said position, being removable from aid chute via said slot by inverting said coin collecting device, means for moving the coin to a second position in the chute,

meansfor looking the coin against'movement in any directionirom saidsecond position in the chute thereby to prevent removal of'said coin fromsaid chute, said last {means including an inclined runway upon which saidcoinrests when in said second position and means preventing the movement .of the coin down said runway, means 'for' disabling said preventing means to permit the coin to move down said runway, means for halting said coin on said runway when it reaches a third position, means controlling said last means at times to permit the coin to resume it movement down said runway from said third position, and means for at other times displacing the runway from beneath the coin when it occupies said third position, thereby to cause the coin to move in a direction different than that in which it would move if it were permitted to resume its movement down said runway from said third position.

3. A movable prepayment pay station for a movable table telephone set, comprising a movable coin chute having a normal position, a coin slot for introducing coins into said chute, means for holding a coin in-one position in said chute against the force of gravity when deposited in the slot, said coin, when in said position, being removable from said chute via said slot by inverting said table telephone set, means for moving the chute away from said normal position to permit said coin to move to another position in said chute, means for then restoring said chute to normal, means for maintaining said coin substantially in said other position in said movable chute throughout said restoration of said movable chute to normal, means responsive to the restoration of said chute to normal for locking said coin in said other position in said chute to prevent return of the coin to its first position should the paystation be inverted, and a set of electrical contacts operated by the coin responsive to said restoration of the chute to its normal position.

4. In a coin collecting device, a movable coin chute through which coins are adapted to move under the influence of gravity, a member extending into said chute and blocking the path of a coin moving therethrough, thereby to halt said coin when it reaches a certain position in said chute, means for then moving said chute to a new position, means including said member for mainta-ming saidzcoin-ta'nd 'said jchute in substantially tthesame relationship withrespect atoione another throughout;saidimovementrofrthe chute,

wherebyisaid .coin remains in saidcertain posi= tIOl'liill said chute when saidchute, occupies'said new ipositiom sa second member extending into saidschut'e nwhenJsa-id chute occupies .said new position, said second :member. blocking the. path by which said :coin reached *said certain position in said 'chutethereby to prevent a retrograde movement of .said :coin in said chute, and. means operatedraiter said chute, has occupied said new position forzan interval .of time for releasing said vcoinzfron'nsaid certain position .in said chute.

;5j.,In :a. coin collecting device,- a :coin chute arranged-to: guide coins .-in their downward move ment .under't'he influence of gravity, :aistationary member'zextendingiinto said chute and blocking thapath of :a coinintroduced therein, thereby -to hold said coin ina'certain position in said chute against the. force of gravity, means for moving said chute with respect to said stationary member, thereby to withdrawsaid member from the path pi ,sa-id coin and permit said coin to move in -.a downwardly -,direction guided, by said chute, 'a' second: member extending into said chute and blocking the path .of :said :coin'for halting said downward movement of the coin'when samehas progressed fromlsaid certain position -a distance substantially :equal tothe diameterof said .coin, means for then restoring said chute to the position occupied by it prior to said movement of the chute, a third member extending into said chute when same has been restored to said prior position, said third member effective to engage said coin to prevent a retrograde movement thereof in aid chute, and means subsequently operated to release said coin from said chute.

6. In a coin collecting device, a movable coin chute occupying a normal position, said normal position beingsuch that a coin deposited in said chute tends to move therethrough due to its own 1 weight, a stationary member extending into said chute and blocking thepath of said coin thereby to hold said coin in a certain position in said chute, means for displacingthe chute from said normal position thereby to prevent said stationary member from blocking the path of said coin and permit said coin to move to a second position in said chute, means for then restoring said chute to said normal position, and a second member extending into said chute at .a place intermediate said certain position and said second position when said chute is restored to said normal position, said second member being efiective to prevent retrograde movement of said coin from said second position to said certain position.

7. In a coin collecting device, a support, means for temporarily maintaining a deposited coin standing on its edge on said support, whereby said coin has one face in a substantially vertical plane, means for moving said coin in a direction generally perpendicular to said plane until said coin clears the edge of said support, thereby to" said coin to assume a new position somewhat below the position occupied by it when it stoodon said support and with said one face again lying in said plane, means efiective upon said coin assuming said new position for loosely engaging both faces of said coin thereby to prevent any further movement of the coin in a direction perpendicular to said .one face so long as said coin remains in said new position, other means effective, when said coin assumes said new position, to engage the circumferential edge of said coin at a plurality of points thereby to prevent said coin from moving in any edgewise direction from said new position, and means for thereafter releasing said coin from said new position.

8. In a coin collecting device, a support, means for temporarily maintaining a deposited coin standing on its edge on said support, whereby said coin has one face in a substantially vertical plane, means for moving said coin in a direction generally perpendicular to said plane until said coin clears the edge of said support, thereby to permit said coin to fall by its own weight in an edgewise fashion, a member blocking the path of said coin to halt said fall thereof, means for then moving saiclcoin in a direction generally perpendicular to said one face thereby to cause said coin to assume a new.position somewhat below the position occupied by it when it stood on said support and with said one face again lying in said plane, a member engaged and. moved by said coin during said last movement of the coin to said new position, circuit controlling contacts operated by said member upon said movement thereof, means including said member efiective to loosely engage both faces of said coin when said for standing a coin on edge on said support whereby said coin has one face in a substantially vertical plane, means for moving said coin in a direction generallyfperpendicular to said plane until said coin clears the edge of said support, thereby to permit said coin to fall by its own weight in an edgewise fashion, a member blocking the path of said coin to halt said fall thereof, means for then moving said coin in a direction generally perpendicular to said one face thereby to cause said coin to assume a new position somewhat, below the position occupied by it when it stood on said support and with said one face again lying in said plane, means effective upon said coin assuming said new position for loosely engaging both faces of said coin thereby to prevent any further movement of the coin in a direction perpendicular to said one face so long as said coin remains in said new position, and means for releasing said coin in an edgewise direction from said new position. i

GEORG BINIEK. HEINRICH LANGNER. 

